[BUG] claude doctor hangs at "Press Enter to continue" on macOS

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

Bug: claude doctor hangs at "Press Enter to continue" on macOS
Environment:

macOS (M4 Pro)
Claude Code 2.1.19 (native install)
Shell: zsh

Steps to reproduce:

Run claude doctor
Diagnostics display successfully
Prompt shows "Press Enter to continue…"
Press Enter — nothing happens

Observed behavior:

Enter key is not recognized
Ctrl+C does not interrupt
Only Ctrl+Z (suspend) works to escape
Process must be manually killed with kill -9 %1

Expected behavior:

Enter should dismiss the prompt and return to shell
Ctrl+C should interrupt and exit cleanly

Notes:
This appears to be an input handling issue specific to the doctor command's prompt. The diagnostics themselves complete successfully and show all systems healthy. Only the interactive prompt at the end is broken.

What Should Happen?

Enter should dismiss the prompt and return to shell
Ctrl+C should interrupt and exit cleanly

Error Messages/Logs

None. The command hangs silently with no error output.

Steps to Reproduce

Steps to reproduce:

Run claude doctor

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.19 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_